Kundalini

Kundalini is presented in tantric and yogic literature as the immanent feminine power (Shakti) inherent in embodied consciousness rather than as an external mythic actor. The term kuṇḍalinī (literally 'coiled' or 'ring-shaped', with serpent associations) emerges in medieval tantric contexts where the power is mapped to the subtle-body scheme (Muladhara chakra, sushumna, sahasrara). While forms of the notion were integrated into Shaiva and Shakta Tantric cosmologies and later into Hatha Yoga and Yoga Upanishadic literature, the sources emphasize its status as an intrinsic Shakti whose awakening is effected by authorized practices or by shaktipat transmitted from a guru.

Kundalini is primarily described metaphorically as a coiled, serpentine, feminine energy residing in the subtle body; classical sources personify it in connection with goddesses such as Parvati, Adi Parashakti, Bhairavi, and Kubjika, but do not give a single consistent anthropomorphic form. Descriptions stress its subtle, internal character rather than an external bodily appearance.

Within tantric and yogic accounts Kundalini, when awakened, ascends the central channel (sushumna) from the Muladhara through successive chakras to the Sahasrara, producing altered states, 'supersensual visions', knowledge, power, bliss, and ultimately union/liberation (moksha). It is described as the source of mantra and the innate intelligence of embodied consciousness in Shaiva/Kaula/Trika theory. Some authors (e.g., Abhinavagupta) distinguish directional modes—an upward (urdhva) movement associated with expansion and a downward (adha) movement associated with contraction. Traditional sources treat these effects as religiously efficacious and transformative rather than empirical claims.